--- a/testing/marionette/client/marionette_driver/marionette.py
+++ b/testing/marionette/client/marionette_driver/marionette.py
@@ -1006,25 +1006,25 @@ class Marionette(object):
             # Restore the context as used before the restart
             self.set_context(context)
 
     def _request_in_app_shutdown(self, *shutdown_flags):
         """Attempt to quit the currently running instance from inside the
         application.
 
         Duplicate entries in `shutdown_flags` are removed, and
-        `"eAttemptQuit"` is added if no other `*Quit` flags are given.
+        `"eForceQuit"` is added if no other `*Quit` flags are given.
         This provides backwards compatible behaviour with earlier
         Firefoxen.
 
         This method effectively calls `Services.startup.quit` in Gecko.
         Possible flag values are listed at http://mzl.la/1X0JZsC.
 
         :param shutdown_flags: Optional additional quit masks to include.
-            Duplicates are removed, and `"eAttemptQuit"` is added if no
+            Duplicates are removed, and `"eForceQuit"` is added if no
             flags ending with `"Quit"` are present.
 
         :throws InvalidArgumentException: If there are multiple
             `shutdown_flags` ending with `"Quit"`.
 
         :returns: The cause of shutdown.
         """